On fresh relatively untrammeled stuff, I'd be inclined to more big sweeping turns, but when the stuff starts to get a bit used, straight-lining it can be career-limiting . In those cases, C turns or pivot turns may be more in order. Of course, if you're a point-and-shoot kind of rider, that's fine too. Whatever's most fun and doesn't kill you.

Hmmm... I'd negociate a narrow icy steep passage like that, or to navigate through rocks or an avy cone, but in pow? It's waisting a good run. Don't know how steep it is, hard to judge from a vid, but in fresh >40° I'd never ride like that. This stop and go puts a lot of pressure on the snowpack... Maybe not an issue at that place, but here my rule of thumb is the steeper it is, the mellower turns I try to do. Also riding faster will result in a better float and turning is easier.

Looked at it a second time... I really don't like the vid. He recommends this to be the right way to ride pow in steep in general without differentiation or giving a warning word on avy danger. He said 35cm fresh. For 35cm fresh in certain terrain on certain days, this could be the best way to induce a slab.